[TA] a slight groove on the external surface of the eyeball indicating the line of union of the sclera and cornea (corneoscleral junction or limbus of cornea). Synonym(s): scleral sulcus, sulcus of sclera
scle·ral sul·cus
(skler'ăl sŭl'kŭs) A slight groove on the external surface of the eyeball indicating the line of union of the sclera and cornea or limbus of cornea.